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 "cells": [
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "26ec15a2-884b-49a7-b5ae-777c9baebd5d",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "import glob\n",
    "import numpy as np\n",
    "import pandas as pd\n",
    "from sklearn.linear_model import LogisticRegression\n",
    "from sklearn.feature_extraction.text import TfidfVectorizer\n",
    "from sklearn.model_selection import cross_val_predict"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "6d4dfe41-3f99-4e6d-ba08-d9df68a0ef75",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "train_data = pd.read_csv('./ChatGPT生成文本检测器公开数据-更新/train.csv')\n",
    "test_data = pd.read_csv('./ChatGPT生成文本检测器公开数据-更新/test.csv')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "2df4ad2a-bc86-4b2f-b1c5-1d8635c1f092",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "train_data['content'] = train_data['content'].apply(lambda x: x[1:-1])\n",
    "test_data['content'] = test_data['content'].apply(lambda x: x[1:-1])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "eb5964eb-4ab4-4a88-b4e4-762eb2858733",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "tfidf = TfidfVectorizer(token_pattern=r'\\w{1}', max_features=2000)\n",
    "train_tfidf = tfidf.fit_transform(train_data['content'])\n",
    "test_tfidf = tfidf.fit_transform(test_data['content'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "id": "710996bc-40fc-49c1-829d-71069200dff8",
   "metadata": {
    "tags": []
   },
   "outputs": [
    {
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      ],
      "text/plain": [
       "LogisticRegression()"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "m = LogisticRegression()\n",
    "m.fit(\n",
    "    train_tfidf,\n",
    "    train_data['label']\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "bd421bf3-7e6f-4fe2-ab80-39263b5c628b",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "import pandas as pd\n",
    "submit = pd.read_csv('sample_submit.csv')\n",
    "submit = submit.sort_values(by='name')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "868341bf-abfe-4f6e-8b30-12909794de02",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "submit['label'] = m.predict(test_tfidf).astype(int)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "ca16c6a6-d9d5-46ca-8187-f73ecae82eb4",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "submit.to_csv('lr.csv', index=None)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "33e5a227-5741-4a59-b75f-4c4c265740bc",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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